Phasic Development of Rice During the Present and Future Climatic Conditions in Central Zone of Kerala

Rice is a staple food and its demand substantially increasing with the growth of global population. Phenological development was found to play significant role in distribution carbon among plant organs, which has an impact on rice yield. Temperature affects phenology, current rapid climate change revived interest understanding modelling phenology response warming trend. Two varieties viz., Jyothi (short duration variety) Jaya (medium were raised at Agriculture Research Station, Mannuthy, during kharif season 2021 phenological observations days 50% flowering physiological maturity recorded. The phenophase been also predicted from Info-Crop CERES-DSSAT for both experimental period validation. To study changes future conditions i.e., near (2030), mid (2050) end (2080) century, weather data downloaded GFDL-CM3 model under RCP 4.5 8.5 scenarios. Using projected data, using models. During base period, took 71 75 reach flowering, while total be 101 108 Jaya. In case more accurately InfoCrop prediction accurate Jyothi. Validation results showed that models can used predict phenophases varieties. compared duration. model, variety near, century expected reduce by 3, 3 4 scenario 1, whereas variety, it 2, respectively. reduction 2 shorten 3-6 4-5 Jaya, century. Results temperature rise cause considerable attain